STRESS STATE ANALYSIS IN ASPECT OF WELLBORE DRILLING DIRECTION

2014 ◽  
Vol 59 (1) ◽  
pp. 71-76 ◽  
Author(s):  
Dariusz Knez
Keyword(s):  
Stress State ◽  
Stress Distribution ◽  
Coordinate System ◽  
Stress Component ◽  
In Situ Stress ◽  
Borehole Wall ◽  
Total Stress ◽  
Cyclic Behaviour ◽  
Cylindrical Coordinate

Abstract Drilling directional wells challenges designers. Apart from known problems until now they face exact description of stress distribution in near wellbore region issue. Paper presents analysis of stress state taking into account drilling direction. The transposed in-situ stress state relative to the borehole coordinate system (Cartesian borehole coordinate system) and the total stress component at the borehole wall (cylindrical coordinate system) exhibits cyclic behaviour with respect to drilling direction of borehole. It allows to find optimal wellbore path

scholarly journals In situ stress state in the Nankai accretionary wedge estimated from borehole wall failures

2010 ◽  
Vol 11 (12) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chandong Chang ◽  
Lisa C. McNeill ◽  
J. Casey Moore ◽  
Weiren Lin ◽  
Marianne Conin ◽  
...  
Keyword(s):  
Stress State ◽  
In Situ Stress ◽  
Borehole Wall ◽  
Accretionary Wedge

scholarly journals In situ stress state from walkaround VSP anisotropy in the Kumano basin southeast of the Kii Peninsula, Japan

2011 ◽  
Vol 12 (9) ◽  
pp. n/a-n/a ◽  
Author(s):  
Takeshi Tsuji ◽  
Ryota Hino ◽  
Yoshinori Sanada ◽  
Kiyohiko Yamamoto ◽  
Jin-Oh Park ◽  
...  
Keyword(s):  
Stress State ◽  
In Situ Stress ◽  
Kii Peninsula ◽  
Kumano Basin

The in situ stress state of Kailuan mining area

2010 ◽  
pp. 375-380
Author(s):  
J Han ◽  
P Zhang ◽  
X Tian ◽  
S Sun ◽  
H Zhang ◽  
...  
Keyword(s):  
Stress State ◽  
Mining Area ◽  
In Situ Stress

The measurement of the in-situ stress state by acoustic emission method (AEM) in weak rocks

Rock Stress ◽  
2020 ◽  
pp. 389-394
Author(s):  
H. Watanabe ◽  
H. Tano ◽  
Ö. Aydan ◽  
R. Ulusay ◽  
E. Tuncay ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Stress State ◽  
In Situ Stress ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
Weak Rocks

Estimation of in-situ stress state at the maximum depth of the Jinping tunnels, China

2010 ◽  
pp. 345-350
Author(s):  
C Zhang ◽  
X Feng ◽  
H Zhou ◽  
C Zhang ◽  
S Wu
Keyword(s):  
Stress State ◽  
In Situ Stress ◽  
Maximum Depth

scholarly journals Effect of Advancing Direction of Working Face on Mining Stress Distribution in Deep Coal Mine

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yuesong Tang ◽  
Wenchao Sun ◽  
Xin Zhang ◽  
Pengju Liu
Keyword(s):  
Stress Distribution ◽  
Large Scale ◽  
In Situ Stress ◽  
Deep Mining ◽  
Deep Coal Mine ◽  
Working Face ◽  
Geological Conditions ◽  
Original Rock ◽  
High Level

Deep mining has become the normal state of coal mining; compared with the mine with shallow buried depth, the consequent high level of in situ stress and complex distribution have brought severe threats to the stability of the stope and the surrounding rock of the roadway. In this research, taking the 121304 working face of Kouzidong Mine as the engineering background, the characteristics of mining-induced stress distribution under complex in situ stress environment in deep mining are analyzed by using on-site measurement of the original rock stress and mining stress, establishing a theoretical model centered on the middle section of the working face, and establishing large-scale numerical calculation models for different advancing directions. It was found that under deep mining conditions, the maximum stress of the original rock is 25.12 MPa, and the direction is vertical. The advanced influence range of mining stress is about 150 m, and the abutment pressure presents a three-peak distribution characteristic in front of the working face. The research results provide important theoretical guiding value for guiding the mining of coal mines with similar geological conditions.

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